This document summarizes the increasing competition and conflict between world powers in Eastern Asia from 1890 to 1945. It describes how a weakened China was vulnerable to exploitation and domination by Western and Japanese imperialist ambitions. Japan emerged as the dominant regional power after defeating China in the First Sino-Japanese War (1894-95) and Russia in the Russo-Japanese War (1904-05). By the late 1930s, Japan was at war with China and sought to contain Western and Russian influence, leading to its involvement in World War II against the Allied forces.